So, I’m not familiar with Filemaker, but I did go through the documentation a little to see what I could find. I suspect the issue here is with how you’re adding carriage returns to the cURL command.

First off, were you able to make this request work without constructing the cURL call using variables? Are you able to copy the request Ayelet posted and put it directly in the “Insert from URL” line?

If you are able to do this, then I suspect the issue is with how you’re constructing the call from your variables. When executing a shell command, carriage returns usually need to be escaped – I suspect adding ¶ between each option with no backslash is throwing the command off.